drain

n. 下水道,排水沟,消耗
v. 耗尽,排出沟外

This country is being drained of its best talents.

这个国家最优秀的人才在不断外流。

Boil the vegetables for 20 minutes and then drain off the water.

把蔬菜煮上20分钟，然后把水沥掉。